function getCookie(name)
{
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	if (begin == -1) {
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	} else {
		begin += 2;
	}
	var end = document.cookie.indexOf(";", begin);
	if (end == -1)
		end = dc.length;
	return unescape(dc.substring(begin + prefix.length, end));
}

function getObAdtag()
{
	var obCookie = getCookie("ob_cookies");
	if (obCookie == null) return '';
	var items = obCookie.split("&");
	return (items[items.length-1] != null) ? items[items.length-1] : '';
}